Carbureter



L. F. BURGER.

CARBURETER.

APPLICATION man APH. 22. 191e'.

L. F. BURGER.

CARBUHETER.

APPLICATION FILED APR. 22. 19H18.

Patented Nov. 1, 1921.

2 SHEETS-SHEET 2.

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////// IIIIIIIII UNITED STATES PATENT OFFICE.

LEOPOLD F. BURGER, OF RIVERSIDE, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, i TOr INTERNATIONAL HARVESTER COMPANY, A CORPORATION OF NEW JERSEY;

CARBURETER.

Specification of Letters Patent.

Patented Nov. 1, 1921.

Application led April 22, 1918. Serial No. 230,036.

i citizen of the United States, residing at Riverside, in thefcounty of Cook and State of Illinois, have invented certain new and useful Improvements in Carbureters, of which the following-is' a full, clear, and exact specification. y This invention relates to carbureters for internal combustion engines. I

An object of the invention is to provide a carbureter and water /miXer which is compact and can be manufactured at small cost. Another object is to provide a carbureter which permits the use of two combustible fluids, one, such as gasolene, which is used to start the engine, and another, such as kerosene, upon which the engine may operate after it has become hot.

Another object is to provide means whereby a pump may operate continuously during the operation of the engine to supply a fuel, such as kerosene, to the carbureter, and means whereby this fuel may be caused to flow through the carbureter or be by-passed around it.

These and other objects are accomplished by my invention, which consists of a carbureter including a fuel reservoir, a. supply chamber therefor, means for continuously supplying an excess of fuel to the fuel reservoir, and a valve for draining the fuel reservoir or the supply chamber.

Reference is'now had to the drawings, in which. like characters represent like parts throughout.

Figure 1 is a horizontal section of my carbureter taken on the broken line 1 1 of Fig. 2;

Fig. 2 is a front elevation of the same partly in section on the broken line 2 2 of Fi 1;

Fig. 3 is av plan view of the carbureter;

Fig. 4 is a vertical section through the auxiliary air valve on the line 4 4 of Fig. 3;

Fig. 5 is a vertical section through the water valve on the line 5 5 of Fig. 3; and

Fig. G is a vertical section through the fuel valve on the line 6 6 of Fig. 3.

This carbureter comprises a body 11 containing the fuel reservoir 12, the supply chamber 13, and the overflow chamber 14.

The upper part of the body is surmounted i by a hooded portion 15 having the air passage 16 partially closed by the auxiliary valve 17, which is pressed by the spring 18, said valve having openings 19 which are always openl for the free passage of air. This air passage leads to the downwardly disposed Venturi tube 20, which in turn leads to the inlet valve of the internal combustion engine. Between the supply chamber 13 and reservoir 12 is placed the weir or dam 21, and between the fuel reservoir and the overfiow chamber 14 is placed another and lower weir 22. Between the supply chamber 13 and overflow chamber 14 is y `placed a threeeway valve 23, having a longitudinal cavity 25 and a port 24 communieating therewith through the side. Drain passages 28, 29, and 30 lead respectively from lthe supply chamber, fuel reservoir, and overflow chamber. These passages are all arranged in the same planewith each other and with the port 24 of the rotatable valve 23 so that as the valve is turned it may be brought into registration with any one of these passages. The longitudinal cavity 25 inthe valve 23 opens into a passage 26 into which is .tapped the overflow pipe 27, which communicates with the main fuel tank of the engine. A fuel supply )ipe31 is likewise tapped into the supply c amber 13, and this pipe communicates with the fuel pump or other source of fuel supply.

At the narrowcst portion of the Venturi tube 2() I have placed an opening 32, which may be regulated by means of the needle valve 33. This needle valve is supplied by means of a tube 34 which reaches down into the fuel reservoir 12, the height of fuel in the reservoir being maintained by the weir 22. A water supply opening 35 is placed in the Venturi tube at the same height as the fuel valve, which is likewise regulated by a needle valve 36. This valve is supplied with water through the chamber 37. in which is .placed a check valve 38 which normally 'upon the cylinder head, and fastened by means of cap screws42. One of these cap screws also carries a spring 43, which serves to prevent the valve 23 from being shaken from its seat and lost. The. valve has a handle 23a, with a projection 23", which is adapted to strike stops 11a in the carbureter body 11, which are so placed as to indicate the two working positions of the valve. The

top of the carbureter body also contains two openings 11b and 11, which permlt the condition of flow of the fuel to be readily observed, and which also supply a ready means for introducing fuel into the fuel reservoir.

The manipulation of the carbureter, when starting with a cold engine, is as follows: The water supply valve 36 is first closed, the three-way valve 23 is then turned to the middle position so as to bringthe opening 24 in registration with the drain 29 to the 'fuel reservoir. Any fuel then in the reservoir is drained through the passage 26 and the overflow pipe 27to the main fuel tank. lVhen the fuel reservoir is thoroughly drained the valve 23 is turned so as to bring the port 24 in registration with the opening 28 so as to drain the supply chamber 13, and at the same time to close the fuel reservoir opening intothe drain. This is done because I prefer t0 supply-fuel to the supply chamber 13 continuously during the operation of the engine, and it is necessary to turn this valve so as to allow this supply of fuel to pass iinmediately back to the fuel tank, and not allow it to back up and overfiow the weir 21 into the fuel reservoir 12. With the valve in this position gasolene is introduced through the opening 11b into the fuel reservoir 12, and the engine started. Enough gasolene is introduced to allow the engine to run until it is thoroughly heated. soon as that is done, and the supply of gasolene in the fuel reservoir is nearly exhausted, the valve 23 is turned as far in the opposite direction as it will go, or, in other words, until the opening 28 is closed, and the opening 30 from the overflow chamber is brought into registration with the port 24 of the three-way valve. i

It will be understood that in the meantime kerosene, or other fuel, has been continuously supplied to the supply chamber 13, and, as before'stated, is allowed to return to the main fuel tank through the overflowv pipe 27. The opening 28 now being closed,

thisfuel will immediately overflow,V the weir 21 into the fuel reservior 12, and asv soon as this is filled to the height of the weir 22, this heavier fuel will then overflow. over the top of this weir in the overflow chamber'l4, and thence back through the pipe 27 to the main fuel tank. As soon as the engine has.

become sufficientlyheated to permit, the' water valve 36 may ybe opened, and v'iiioisture (supplied to the charge received by the cyliner. v

What 'I claim as new is: 1. In a carbureter, a fuel reservoir, means for supplying fuel thereto, means for mainv taining the height of fuel therein, and controlling means for draining said reservoir when said controlling means is in one position, and for causing fuel to flow to the reservoir and return excess fuel to the source of supply when said means is in another position.

2. In a carburet-er, a fuel reservoir, a supply chamber therefor, means for 'continu-v 4. In a carbureter, a fuellreservoir, a sup ply chamber therefor and an overflow chamer therefor, means for continuously supplying an excess of fuel to the supply chamber, and a valve for drainingthe fuel reservoir, the overflow chamber, or the supply chamber.

5. In a fuel `feed means for an internal combustion engine, a fuel reservoir, a supply chamber therefor, an overflow chamber, level maintaining weirs between said chambers and said reservoir, means for constantly feeding fuel to the supply chamber during the operation of th-e engine, an overflow duct, a valve leading thereto which in one position communicates with the supply chamber, ina second position with the fuel reservoir, and in a third position with the overflow chamber.

6. In a fuel feed means for an internal combustion engine, a fuel reservoir, a sup ply chamber, therefor, an overfiow chamber, level maintaining weirs bet-Ween said chainbers and said reservoir, the weir between the supply chamber and the fuel reservoir being higher than the we ir between the fuel reservoir and the, overflow chamber, means for constantly feeding fuel to the supply chamber during the operation of the engine, an overflow duct, a vvalve leading thereto which in one position communicates with the supply chamber, in a second position with the feeding fuel to the supply chamber during fuel reservoir, and in a th1rd position with the operation of the en ine, an overfiow 10 the overflow chamber. ductand means for draining either the sup- 7. Ina fuel feed means for an internal ply chamber, the fuel reservoir, or the over- 5 combustion engine, a fuel reservoir, a supflow chamber to the overflow duet. ply chamber therefor, an overflow chamber, In testimony whereof I ailix my signature. level maintaining Weirs between said chambers and said reservoir, means for constantly LEOPOLD F. BURGER. 

